Quantcast KDVD: CCE and Audio Delays? - digitalFAQ.com Forums [Archives]
  #1  
11-07-2003, 10:35 PM
J-Wo J-Wo is offline
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I'm having some audio delay problems with CCE making KDVDs from divx/xvid sources with VBR MP3 audio. I'm noticing that the audio is a little late throughout the movie, and I never had this problem making KVCDs with tmpgenc. When I load the audio and video streams into DVD-Lab, I notice a 3 second discrepancy between the audio track and the video track.

Here's where I think the problem lies: According to virtualdub, my movie length is 43:55 min. When I load my avs file in CCE, it reports the same # of frames as vdub but the duration is only 43:52 min! On my player the delay is definately not as large as 3 seconds though. According to vdub, the audio stream has a 0.07s preload so I tried re-encoding with headache to add a -70ms delay but that didn't fix the probably appreciably. When I load the avs in tmpgenc, it reports the correct # of frames and duration, so I'm going to try reencoding the video to see if that fixes the problem.

Has anyone else noticed this? I'm using CCE 2.67.00.11 with the templates downloaded from this forum and DVD-Lab 1.3 beta 4. I also tried everything with a basic script only containing the avisynth line.

Any help would be greatly appreciated! Thanks.
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  #2  
11-08-2003, 04:36 AM
vmesquita vmesquita is offline
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Looks like it always happens... Just checked with a DVD source: VirtualDub reports 1:54:47:47, CCE shows 1:54:40:14. Funny things is that I never noticed... Have you muxed in DVDLab to check if it's really delayed?

PS:Update DVDLab to beta6

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11-08-2003, 04:53 AM
Boulder Boulder is offline
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Have you tried using EnsureVBRMP3Sync() in your AVS script?

I often do this when I extract the audio:

Code:
AVISource("path\clip.avi")
EnsureVBRMP3Sync()
Trim(0,0)
..and the rest of the script here..
I found out that the audio is often not in sync without that Trim line for some reason. In fact, any trimming will do(for example, if you'll cut the end credits off etc.)
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11-08-2003, 11:00 AM
J-Wo J-Wo is offline
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Well strangely enough, I encoded another avi source with vbr audio and the sound was perfectly in sync... Maybe upgrading to DVD-Lab 1.3 beta 6 fixed it, I'll have to try reauthoring the one that gave me problems to see if it's corrected.

Quote:
Originally Posted by Boulder
Have you tried using EnsureVBRMP3Sync() in your AVS script?
No actually, I haven't tried this. What exactly does it do? Does it make CCE/Tmpgenc encode the audio as well, or do I still use Headache/Besweet? Let me know what you do exactly and I'll give it a shot.
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11-08-2003, 11:59 AM
Boulder Boulder is offline
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Load your script with those lines in VirtualDub and save the audio track as WAV, then encode as normally from WAV to MP2 with BeSweet or HeadAC3he.
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  #6  
11-08-2003, 12:13 PM
J-Wo J-Wo is offline
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Is this line only necessary for decompressing and re-encoding audio, or do I leave it in to encode the video as well?
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  #7  
11-09-2003, 10:27 AM
Boulder Boulder is offline
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It applies only to audio so you can drop it when you encode the video.
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